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Sintering method of vanadium-titanium magnetite concentrate

A technology of vanadium-titanium magnetite concentrate and sintering method, which is applied in the field of preparation of vanadium-titanium magnetite concentrate, can solve the problems of difficult sintering, low liquid phase generation, high liquid phase generation temperature, etc., and achieve increased liquid phase generation and strength , Increase the effect of the binder phase

Active Publication Date: 2021-01-26
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for blast furnace smelting, the melting temperature of high-titanium blast furnace slag is still high, and the fluidity of slag is poor, which brings problems such as poor separation effect of slag and iron and great difficulty in smelting.
For the sintering process, since the vanadium-titanium magnetite concentrate has SiO 2 Low content, TiO 2 The characteristics of high content of vanadium-titanium magnetite lead to high liquid phase formation temperature and small amount of liquid phase formation in the process of vanadium-titanium magnetite concentrate, which makes sintering more difficult

Method used

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  • Sintering method of vanadium-titanium magnetite concentrate
  • Sintering method of vanadium-titanium magnetite concentrate

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Experimental program
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Embodiment 1

[0020] First carry out material mixing in the following range by weight:

[0021] A. Crush medium-grade common ore to <3mm powder, with a ratio of 5-10%.

[0022] B. Crush the fluorite ore to a powder of <3mm, with a ratio of 1-5%.

[0023] C. Crush the limestone and active lime to a powder of 6%, and the limestone is adjusted according to the difference of sintering alkalinity, and the general proportion is 3-8%.

[0024] D. Control the particle size of the coke powder to <5mm, and its proportion is 4.5-5%.

[0025] E. The particle size of vanadium-titanium magnetite concentrate is -200 mesh>80%, and the ratio of vanadium-titanium magnetite concentrate is 65-75%.

[0026] The above materials are mixed with water according to the ratio. The water content of the mixture is 7.2%-7.6%, the fixed carbon is 3.0-3.3%, the alkalinity R0 of the mixture is 1.8-2.4, and the height of the material layer is 750-850mm. The first time of mixing and granulation is 4±1min, and the second t...

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Abstract

The invention relates to the field of vanadium-titanium-magnetite concentrate preparation, in particular to a sintering method for vanadium-titanium-magnetite concentrate which can effectively improve the quality of sintered ore products. Fluorite ore powder, 65-75 parts of vanadium-titanium magnetite concentrate, 3-8 parts of limestone powder, 6-10 parts of active lime and 4.5-5 parts of coke powder are mixed to form a mixture, and the mixing is controlled The alkalinity of the material is 1.8 to 2.4; water is added to the mixture, and the weight percentage of water in the mixture after adding water is controlled to be 7.2% to 7.6%; the first mixing granulation and the second mixing The material after the second mixing and granulation is added to the sintering machine for sintering, and finally the finished product is obtained. The invention controls the proportion of each material, realizes the sintering of vanadium-titanium magnetite concentrate, increases the binding phase of the sintered ore, increases the liquid phase generation amount in the sintering process, and improves the strength of the vanadium-titanium sintered ore. The invention is especially suitable for the sintering process of vanadium titanomagnetite concentrate.

Description

technical field [0001] The invention relates to the field of vanadium-titanium magnetite concentrate preparation, in particular to a sintering method of vanadium-titanium magnetite concentrate. Background technique [0002] my country has abundant reserves of vanadium-titanium magnetite, especially in Panxi area. The sintering and blast furnace smelting technology for Panxi vanadium-titanium magnetite is relatively mature. However, for blast furnace smelting, the melting temperature of high-titanium blast furnace slag is still high, and the fluidity of slag is poor, which brings problems such as poor separation effect of slag and iron and great difficulty in smelting. For the sintering process, since the vanadium-titanium magnetite concentrate has SiO 2 Low content, TiO 2 The characteristics of high content of vanadium-titanium magnetite lead to high liquid phase formation temperature and small amount of liquid phase formation in the process of vanadium-titanium magnetite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/22C22B1/24
CPCC22B1/22C22B1/24
Inventor 付卫国郑魁胡鹏唐文博
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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